Closure



p 1937- H. A. BARNBY 2,094,567

CLOSURE Filed June 27, 1936 IN V EN TOR.

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Patented Sept; 28; 1937 'ATENT eerie M CLOSURE Herbert A. Barnby, Toledo, Ohio, assignor to Owens-Illinois Glass of one; Application June 27,

2 Claims.

The present invention relates to improvements in closures for jars and other receptacles and in particular to a novel construction of a screw cap or the like capable of receiving a knife or a similar instrument designed to facilitate rotation and hence removal or application of said cap.

It is an object of the present invention to provide an improved screw cap for a bottle or jar designed to permit a knife or similar elongated implement to be used as a lever in rotating the cap and thereby permitting ready attachment or removal from the bottle or jar.

It is another object of the present invention to provide a screw cap having sufficient strength and rigidity to withstand not only the ordinary forces which may be applied in attaching or removing the cap but also occasional extraordinary jerks, yanks and other forces.

A further object of the present invention is to provide a screw cap with the foregoing characteristics which is inexpensive and simple in design and construction.

Other advantages of the present invention will become apparent from the following description taken in conjunction with thedrawing in which:

Fig. 1 is a top plan view of a cap constructed in accordance with my invention;

Fig. 2 is a vertical cross-sectional view of the cap shown in Fig. 1 applied to a jar or other receptacle, the said section being taken along the line 2-2 of Fig. 1;

Fig. 3 is a perspective view of the same embodiment showing in dotted lines a knife or the like in operating position;

Fig. 4 is a cross sectional view taken along the line 44 of Fig. 1;

Figs. 5 to 8 illustrate a modification of the present invention;

Fig. 5 is a top plan view of the modified embodiment;

Fig. 6 is a side elevational view with parts in section;

Fig. '7 is a perspective View illustrating a knife in operating position, and

Fig. 8 is a vertical sectional view taken along the line 88 of Fig. 5.

Referring more particularly to Figs. 1 to 4 I have shown a cap or closure I0 formed of sheet metal, or the like, material and comprising a circular top portion H and an annular depending skirt l2. The skirt I2 is preferably formed from a strip of sheet metal, the free ends of which are secured together by a vertical side seam l3. The lower margin of the skirt I2 may be rolled as is customary to form a bead I4.

Company, a corporation 1936, Serial No. 87,714

Threads I5 are rolled into the skirt in the usual manner to mate with threads l6 of a jar H. A gasket H is preferably provided to form a seal.

The top portion II which is in the form of a disk has an upwardly extending flange 22 along its periphery over which is folded the upper edge of the skirt E2 to form an interlocking bead iii. In accordance with the present invention the head 58 projects for a certain distance above the level of the top portion H to form an upstanding wall around the outer periphery of the cap it).

In order to form a transverse channel it! adapted'to receive a knife blade or similar instrument, two diametrically opposed notches 25 are formed in the bead l8 preferably by bending predetermined and oppositely disposed portions of the bead l8 outwardly to lie substantially in the plane of the top portion H. The remaining portions of the bead it are thus made to form upstanding arcuate walls 2i In view of the multiple thickness of the arcuate walls 2i formed by the interlocking of the top portion H and the skirt it, the walls are especially resistant to distortion under the pressure of the knife or similar instrument. Moreover, the location of the walls 2! at the extreme outer periphery of the cap ill assures a maximum leverage to prevent collapse or bending under the force of the knife or other lever. In other words, I have achieved a reduction in the relative forces at the contact points of the arcuate walls 2! by spacing them apart as far as possible. In this manner I have provided a cap capable of withstanding an unusual or excessive amount of force sometimes exerted in dislodging the cap or in securing it to the jar.

The modification shown in Figs. 5 to 8 is similar in certain respects to that shown in Figs. 1 to 4 with the additional feature of an elongated slot or channel 25 formed in the top portion 25 in register with the notches 25 in the bead it. Two raised portions or bosses Z'l on each side of the channel are stamped at opposite sides of the center of theicap. The inner edges fit of the bosses 2'! which form the'side walls of the channel 25, are preferably of considerable length so that the force applied by a knife 39 may be distributed over substantially the entire area of the top portion 26 and thus prevent any danger of mutilation of either the cap or knife.

7 It is to be observed that the present invention provides a screw cap or closure for jars and other receptacles which is exceedingly durable and may withstand not only the ordinary forces applied to the screw cap, but also occasional excessive forces which are frequently necessary and are applied in securing or removing the cap.

Modifications may be resorted to- Within the spirit and scope of my invention.

I claim:

1. A screw cap for a receptacle which comprises a fiat circular top portion, an upwardly extending flange around the margin of said top portion and a peripheral attaching skirt depending from said top portion and formed of a strip of sheet metal having its ends interlocked to form a side seam and having the upper edge thereof overturned and interfolded with said flange to provide an upstanding peripheral rim on said top portion, said interfolded rim being bent outwardly into the plane of said top at diametrically disposed regions thereof, thus providing voids adapted to receive an implement for turning said cap.

2. A screw cap for a receptacle which comprises a fiat circular top portion, an upwardly extending flange around the margin of said top portion and a peripheral attaching skirt depending from said top portion and formed of a strip of sheet metal having its ends interlocked to form a side seam and having the upper edge thereof overturned andvinterfolded with said flange to provide an upstanding peripheral rim on said top portion, said interiolded rim being bent outwardly into the plane of said top at diametrically disposed regions thereof, thus providing voids adapted to receive an implement for turning said cap, said top portion being formed with a pair of bosses at opposite sides of its center and said bosses forming a transverse channel therebetween registering with and of a width equal to said notches.

HERBERT A. BARNBY. 

